AMSC
American Superconductor Corp
stockNASDAQ
At CloseOct 19, 2026 3:59:52 PM EDT
25.68USD+0.039%(+0.01)806,074
Pre-marketOct 19, 2026 9:25:30 AM EDT
26.57USD+3.506%(+0.90)
As of 2026-09-30, there were 3,895,546 shares short with a short interest of 8.46%.
AMSC Short Interest - Official
AMSC Short Position Change - Official
AMSC Short Interest - Official
| Settlement Date1 | Short Interest % | Short Position | Days to Cover2 | Short Position Change | Short Position Change % | Shares Out | Shares Float |
|---|---|---|---|---|---|---|---|
| 2026-09-30 | 8.46 | 3,895,546 | 5.37 | -34,147 | -0.87 | 48,442,143 | 46,049,941 |
| 2026-09-15 | 8.53 | 3,929,693 | 5.98 | +273,477 | +7.48 | 48,442,143 | 46,049,941 |
| 2026-08-31 | 7.94 | 3,656,216 | 5.75 | +177,836 | +5.11 | 48,442,143 | 46,049,941 |
| 2026-08-14 | 7.55 | 3,478,380 | 4.84 | -54,246 | -1.54 | 48,442,143 | 46,049,941 |
| 2026-07-31 | 7.67 | 3,532,626 | 4.24 | +129,088 | +3.79 | 48,462,307 | 46,049,941 |
| 2026-07-15 | 7.40 | 3,403,538 | 5.07 | +39,072 | +1.16 | 48,462,307 | 46,023,709 |
| 2026-06-30 | 7.31 | 3,364,466 | 3.29 | -96,210 | -2.78 | 48,462,307 | 46,026,093 |
| 2026-06-15 | 7.52 | 3,460,676 | 2.39 | -437,652 | -11.23 | 47,694,445 | 46,022,186 |
| 2026-05-29 | 8.48 | 3,898,328 | 2.81 | +159,562 | +4.27 | 47,694,445 | 45,950,259 |
| 2026-05-15 | 8.15 | 3,738,766 | 3.14 | -37,395 | -0.99 | 47,612,285 | 45,871,104 |
| 2026-04-30 | 8.77 | 3,776,161 | 2.21 | +829,459 | +28.15 | 47,612,285 | 43,066,625 |
| 2026-04-15 | 6.84 | 2,946,702 | 3.37 | +141,547 | +5.05 | 47,612,285 | 43,066,625 |
| 2026-03-31 | 6.51 | 2,805,155 | 2.72 | +330,609 | +13.36 | 47,612,285 | 43,066,625 |
| 2026-03-13 | 5.75 | 2,474,546 | 2.87 | -537,704 | -17.85 | 47,612,285 | 43,066,625 |
| 2026-02-27 | 6.99 | 3,012,250 | 3.11 | +182,530 | +6.45 | 47,612,285 | 43,066,625 |
| 2026-02-13 | 6.57 | 2,829,720 | 1.43 | +391,952 | +16.08 | 47,612,285 | 43,066,625 |
| 2026-01-30 | 5.66 | 2,437,768 | 3.18 | -159,402 | -6.14 | 47,603,931 | 43,066,625 |
| 2026-01-15 | 6.03 | 2,597,170 | 3.19 | +192,695 | +8.01 | 47,603,931 | 43,066,625 |
| 2025-12-31 | 5.58 | 2,404,475 | 3.12 | +138,736 | +6.12 | 47,603,931 | 43,066,625 |
| 2025-12-15 | 5.26 | 2,265,739 | 2.93 | -280,587 | -11.02 | 47,603,931 | 43,066,625 |
| 2025-11-28 | 5.91 | 2,546,326 | 2.71 | -116,509 | -4.38 | 45,186,789 | 43,066,625 |
| 2025-11-14 | 6.18 | 2,662,835 | 1.53 | +33,006 | +1.26 | 45,186,789 | 43,066,625 |
| 2025-10-31 | 6.11 | 2,629,829 | 2.72 | -42,381 | -1.59 | 45,160,926 | 43,040,621 |
Historical data is split-adjusted.
1 Data from Finra. Finra publishes an updated file every two weeks.
2 Days to Cover (DTC) is also called Short Ratio. This is the Short Position / Average Daily Trading Volume.